func readLibrary() (index.Library, error) {
var count int
check := func(x string) {
if x != "" {
count++
}
}
check(itlXML)
check(tchLib)
check(walkPath)
switch {
case count == 0:
return nil, fmt.Errorf("must specify one library file or a path to build one from (-itlXML, -lib or -path)")
case count > 1:
return nil, fmt.Errorf("must only specify one library file or a path to build one from (-itlXML, -lib or -path)")
}
var lib index.Library
switch {
case tchLib != "":
f, err := os.Open(tchLib)
if err != nil {
return nil, fmt.Errorf("could not open Tchaik library file: %v", err)
}
defer f.Close()
fmt.Printf("Parsing %v...", tchLib)
lib, err = index.ReadFrom(f)
if err != nil {
return nil, fmt.Errorf("error parsing Tchaik library file: %v\n", err)
}
fmt.Println("done.")
return lib, nil
case itlXML != "":
f, err := os.Open(itlXML)
if err != nil {
return nil, fmt.Errorf("could open iTunes library file: %v", err)
}
defer f.Close()
lib, err = itl.ReadFrom(f)
if err != nil {
return nil, fmt.Errorf("error parsing iTunes library file: %v", err)
}
case walkPath != "":
fmt.Printf("Walking %v...\n", walkPath)
lib = walk.NewLibrary(walkPath)
fmt.Println("Finished walking.")
}
fmt.Printf("Building Tchaik Library...")
lib = index.Convert(lib, "TrackID")
fmt.Println("done.")
return lib, nil
}
func importXML(itlXML string) (index.Library, error) {
f, err := os.Open(itlXML)
if err != nil {
return nil, err
}
defer f.Close()
l, err := itl.ReadFrom(f)
if err != nil {
return nil, err
}
return l, nil
}